Star profile
15 Sagitta
What is 15 Sagitta
15 Sagittae lies just 58 light-years away —a yellow star, a Sun analog, with 1.08 solar masses and a surface at 5,883 K. In January 2002, a team using adaptive optics on the Gemini North and Keck telescopes captured a direct image of a substellar companion around it: a brown dwarf between 55 and 78 Jupiter masses, separated from the star by less than the Sun-Uranus distance —the smallest direct-imaging separation seen at the time—.
Where it is and when to see it
15 Sagitta lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is July, when it culminates around midnight.
- From London it culminates about 56° above the horizon.
- From New York it culminates about 66° above the horizon.
- From Sydney it culminates about 39° above the horizon.
It can be seen from anywhere north of 73° S.
It ranks no. 12 in brightness among the 14 stars of Sagitta in our catalogue. To find it, start from Gamma Sagitta, the brightest: it lies about 3° away (a fist at arm's length covers about 10°).
The light you see today left it about 58 years ago.
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Astronomical data for 15 Sagitta
- Constellation
- Sagitta
- Apparent magnitude
- 5.80
- Distance
- 58.0 light years
- Coordinates (J2000)
- RA 301.026° · Dec 17.070°
- Catalogue
- HIP 98819 · HD 190406
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Other stars in Sagitta
Sagitta has 14 stars in Stelvia's catalogue. Here are a few of them.
- Gamma Sagitta3.51
- Delta Sagitta3.68
- ShamAlpha Sagitta4.39
- 1 Sagitta5.65
- Epsilon Sagitta5.67
- 10 Sagitta5.71
- HIP 1002765.82
- HIP 987385.99